Brake for motor vehicles



March 4 1924; 1,485,686

A. F. MAsURY BRAKE FOR MOTOR VEHICLES led Jan. 31. 1921 w 3 Sheets-Sheet l 351 G-MIQZMQW arch 4, 1924; lfisfigfi A. F. MASURY BRAKE FOR MOTOR VEHICLES Filed Jan. 51. 1921 s Sheets-Sheet 2 wwemtoz March 1924.

A F. MASURY BRAKE FOR MOTOR VEHICLES 1 Filed Jan. "'31 1921 s I l l I l I I J Sheets-Sheet 5 Fatented Mar; 4,

, UNETED psrar A I aeaaet f earnerferries -ALFRED r.

a PANY,OF.NEW

MASUB-Y, on NEW YORK, N. Y., AssIGno'n 'ro m'rnnnn'rronnn MOTOR com- YORK; N. Y., A. CORPORATION orrntawm.

nRAKE" ron MOTOR VEHICLES.

Application filed January 94,1921. Serial n. 441,130.

T O OLZZ whom it oo'n-cermf v I :Be it known that I, ALFRED F. MASURY, a

citizen of the United States, residing in the borough of Manhattan, of the city of New York, in the State of New York, have in-.

vented certain new and useful Improvements in Brakes for- Motor Vehicles; of

whichthe following is a specification, reference being hadto the accompanying draw-' ings, forming a part hereof. v. Brakes formotor vehic1es-have"been "mounted on the propeller shaft but such brakes and their operating mechanism have not been formed edyor demounted 'without disturbing the alinement ofthe chassis or of the shafting i or of any hicle. The principal object of the present invention is to provide a brake unit for the be removable therefrom without disturbing said shaft 'when'the brake unit'is to be de-,

'. mounted. "Affurther object is to improve generally the construction of brakes and particularly brakes .for propeller, shafts by simplifying thev parts and their relation and providing operating mechanism which will bring about 'a yielding" application of the shoes, thereby eliminating the quick and freezing applications which are now so fre- 40 quent and so destructive to the mechanism of motor vehicles. In'carrying outgthi'sobject springs are operatively interposed between "the operating lever and the 1 brake shoes so that the brake; tension is propor-" 4 tioned to the-tension of said springs- A f further feature of theapplicating mechchange of direction of anism resides in the the braking power and its equal'andopposite transmission to contracting brake shoes. so A further feature of the invention peculiar to the organization of parts on the propeller shaft is the support of bearing'reta'iners for the brake shaft detachably on the frame for the entire braking mechanism,

.the drawings. In the drawings' v as self-contained units; that, 15 is, mechanical entities which. might be'mount;

unrelated parts of the motor vethe arrows.

cerned particularly the frame.

,ings g which are whereby I said bearing retainers: may be unbolted from the frame and the brake drum dropped. These and other objects will be'explained fully inthedetailed' description, whichfollows' of the practical embodiment shown in v Figure lie a view in side elevation of the improved'brake, a fragment of one of the side frame members of a motor vehicle being indicated and also fragments of the propeller shaftingwhich extends forwardly v and rearwardly' from the brake shaft.

s Figure 2 is a view of one face of theimproved brake t ken through a section of the brake shaft on'the plane indicated by the line 2-2 of Figure-l and looking in the direction of the arrows.

Figure 3 is a view'n longitudinal section I through the improved brakemechanism and taken on the plane indicated by the line 3-3 looking in the direction of of Figure 2 and Certain features of the invention are conwith the provision of improved brakemechanism for application to a propeller shaft. Certain other features so i are not limited to such an application but have to do with improved'brake structure per se; The line of demarkation in so far 7 as concerns the practical adaptations and the v scope of the invention will be clear tonne B5 skilled in the-art. y One of the side frame members a of a motor chasm's is indicated in Figures 1 and 3.

Extending transversely of the chassis from this frame member a to. the other sidev frame member are two supporting rails shown as channels I). To these transverse trusses b may be bolted an integral frarne c'of gen- 'erally rectangular outline, as by means of boltsd passing "upwardly through the trussea es b. These bolts d may pass through spacing sleeves diresting within the channels b. Other bolts-e may pass through the flanges of the channels I)" and engage the brake framec.

To the frame omay be secured at opposite sides bearingretainers 1'1, 7'', as by bolts 7", passing through the retainers and through In these retainersflf' are sup ported suitable bearings shown" as ball bearwe'- held removably in place may be bolted by bearing caps g, g which to the vrespectlve retainers j, In the'hear- Z ceives a-brake drum 2' which is keyed on to ings-g is journaled ,a brake shaft h which becomes a short section of .thepropeller shafting, two sections h, h? of which, ex-

tending to appropriate elements in the mo'-' tor vehicle, are illustrated'in Figural. The

brake shaft it may be coupled to the resped tive sections h, 71 through any approved type of'coupling, preferably of a flexible type, illustrated conventionallyat h in the drawings.

The brake shaft h inthe preferred form has thereon an annular flange h andl rethe shaft and has its'hub-z" in engagement with the face ofthe flange. Bolts 2' passing through the hub i" and through the flange if serve to secure the drum fixedly to'the shaft. lln one of the ends of the generally rectan-- gular frame 0 is supported a transverse pin it on which are pivoted eurved brake shoes Z, Z properly lined, as at P, and adapted to embrace the greater part of the periphery of the brake drum The free end of one of the shoes l carries a guide Z for an operatingbolt Z which passes through said guide and has, at oneside of the 'guidea spring m which is interposed between'the guide and adjustable nuts Z and has at the other side of the guide a second springm which is in:

,terposed oper'atively between the guide and the head Z of the operating bolt. The free- .end of the other brake shoe Z carries a similar guide Z through which passes an operating bolt Z for the "brake shoe, springs m and "m corresponding respectively'to the springs m and m, belng-operatively associated with the bolt Z at'oppositesides of the for operation of the brake.

The improved unit is to be considered as a, self-contained entity ,with reference to the rectangular supporting frame 0 which. is

vigfis also carried on the frame 0. V disposition of parts makes it evident that in mounting the brake mechanism all. of the parts thereof maybe completely assembled guide Z. The heads of the bolts Z Z are pivotally connected to a crossarm it carried on a rock shaft n which is journaled in the end of-the frame 0 opposite from the bearing point of the pin 10'. The rock-shaft a may carry an operating arm 42? connected as through linkage n to any bolted to the transverse trusses 7)., The de- 'scription given makes-it plain that the-brake shaft h isjournaled in, the bearing retainers f, i which are bolted detachably tb said frame a; The description also has made it clear that the brake drum z'is carried on this brake shaft b, that the operating brake shoes Z, Z are journaled in-ythe framec ,and I that the operating mechanism' for the shoes" associate'd. with the rock shaft This on the frame 0 before the latter is bolted in place. The last operation in mounting wouldconsist in coupling the short shaft h 1 Changes in design ing within the skill of the mechanic m -rnade and one or more of the no Q convenient device x I the associated sections h, k through suita e members, such as are indicated at-h Tn demounting the self-contained unit the reverse operations are. efiected- On the other hand, by dropping the 'lower brake shoe Z the bearing retainers f, f might be .unbolted from the. frame 0 and the drumi with theshafth be removed and later restored. Any and'all of these operations may be carried on without-disturbing the alinement of the chassis or of the shafting or of any of the parts of the motor vehicle which do not enter into the brake mechanism. The entire structure is comparatively simple and the parts thereof are very accessible.

The operating mechanism itself constitutes an improvement in brike structures.

The a'pplipating power is transmitted through a rod, such as n, to the frock shaft n and thenehanged in its direction of applicationthrough the cross arm n to'the re- Y spective operating bolts Z Z The cross arm n when rocked draws these bolts with equal powerexerted along parallel lines but in opposite. directions. This power is not applied directly to the respective brake shjoes Z, Z

but instead is transmitted through the re-' spective springs m to said shoes.

tioned to the tension 'ofthe springs. Upon release the respective springs-m m become effective to thriow the shoes Z, Z out of oper- The braking power .is applied with great leverage and yet with a .uniform'yielding The 7 force of application is accordingly propor- 'ativeengagement with the brake drum 2'.

draw. Destructivestrains and shocks are avoided and the life of the braking mechanism as well as ofthe vehicle is accordingly prolonged. p a v and arrangement fallsaid. shaft,a;frame supported on the 'side' lllltl frame members of the chassis, a pair of been,

ings' for the shaft carried removably on said frame, at the front and rear thereof, re-

.spectively, brake shoes for the drum supported operatively. on said frame andopcrating mechanism for the shoes supported onsaid frame, p

Q. In combination with a anotor vehicle and the. side framexmembers of the chassis EEG and a propeller shaft extending longitudinally between said side frame members," transverse trusses extending between said slde frame members, a frame COIIIPTISH Ig front and rear transve rsely extending. ste

nesaeee mechanism engaged operatively with said.

shoes and carried by said frame.

3. In a motor vehicle in combination with the side frame members of the chassis and a propeller shaft extending longitudinally therebetween, a detachable shaft section coupled in said propeller shaft, a brake drum on the shaft section, a frame in which the front and rear ends of the detachable shaft section are journaled, means to support said frame on the chassis, and brake shoes and ope'ratingmechanism therefor operatively associated with said drum.

4. In a motor vehicle in combination with the side frame members of the chassis and a propeller shaft extending longitudinally therebetween, a short shaft section coupled in said propeller shaft, a framencomprising front and rear transversely extending elements supported by said side frame members, bearing retainers secured detachably to said frontand rear elements and in which said shaft section is journaled at each end, a brake drum carried on the shaft section and brake shoes and operating mechanism therefor operatively associated with. said drum.

5. In combination with a brake drum and curved shoes extending in opposite directions about its periphery, operating mechanism for said shoes including a rock shaft, a cross arm carried thereby, means including adjustable springs for operatively connecting the cross arm with the free ends of said shoes, means to support the rock shaft with its axis in substantially the same plane with the axis of the drum but at right angles thereto and means to oscillate the rock shaft: I I

6. In combination with a brake drum and curved brake shoes cooperating: with the periphery thereof, operating mechanism for the shoes including a rock shaft, 2. cross arm carried by the rock shaft, guides carried at the ends of the shoes, bolts passing through said guides, the ends of said bolts being connected operatively to the rock shaft, and springs carried by said bolts at opposite sides of the'ends of said shoes for applica tion of. the braking power through said springs.

7. In a motor vehicle in combination with the side frame members of the chassis and a propeller shaft extending longitudinally therebetween, a short shaft section coupled 'in said propeller shaft, a frame supported by'said side frame members, bearing retainers for the short shaft section detachably secured to said frame, a brake drum secured to said shaft section, brake shoes pivotally supported on said frame and co-operatin with the periphery of said brake drum, and a rock shaft journaled in said frame and operatively connected with the free ends of said shoes for applying them to the drum.

8. Braking mechanism for a motor vehicle, comprising a frame including front and rear transversely extending elements, means for'securing said frame to the chassis, a propeller shaft, a bearing for the propeller shaft carried by each of said front and rear transversely extending elements, a brake drum secured on the propeller shaft and located between the said front and rear elements of the frame, and brake shoes and operating mechanism therefor mounted on the frame.

.9. In a braking mechanism for a motor vehicle, the combination of a frame including front and rear transversely extending elements, a bearing carried by each of said front and rear elements, a short shaft section journaled in said bearings, a brake drum fixed on said short shaft section between the bearings and brake shoes and operatingmechanism therefor carried on the frame.

This specification signed this 28th day of January,-A. D. 1921.

ALFRED F. MASURY. 

